alc device cleanup failures

[16:46:23] [Client thread/INFO]: Setting user: ShadowWarriorTM
[16:46:24] [Client thread/INFO]: LWJGL Version: 2.9.4
[16:46:26] [Client thread/INFO]: Reloading ResourceManager: Default, PureBDcraft 128x MC19.zip
[16:46:26] [Client thread/WARN]: Missing sound for event: minecraft:entity.snowman.ambient
[16:46:26] [Sound Library Loader/INFO]: Starting up SoundSystem...
[16:46:26] [Thread-5/INFO]: Initializing LWJGL OpenAL
[16:46:26] [Thread-5/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[16:46:26] [Thread-5/INFO]: OpenAL initialized.
[16:46:27] [Sound Library Loader/INFO]: Sound engine started
[16:46:29] [Client thread/INFO]: Created: 8192x4096 textures-atlas
[16:46:48] [Server thread/INFO]: Starting integrated minecraft server version 1.9-pre2
[16:46:48] [Server thread/INFO]: Generating keypair
[16:46:48] [Server thread/INFO]: Preparing start region for level 0
[16:46:49] [Server thread/INFO]: Preparing spawn area: 15%
[16:46:50] [Server thread/INFO]: Preparing spawn area: 99%
[16:46:50] [Server thread/INFO]: Changing view distance to 13, from 10
[16:46:51] [Server thread/INFO]: ShadowWarriorTM[local:E:ab96cb75] logged in with entity id 251 at (-170.64303798228025, 64.0, 242.49966420795732)
[16:46:51] [Server thread/INFO]: ShadowWarriorTM joined the game
[16:46:52] [Server thread/INFO]: Saving and pausing game...
[16:46:52] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/Overworld
[16:46:52] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/Nether
[16:46:52] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/The End
[16:46:57] [Server thread/INFO]: Saving and pausing game...
[16:46:57] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/Overworld
[16:46:57] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/Nether
[16:46:57] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/The End
[16:46:58] [Server thread/INFO]: Stopping server
[16:46:58] [Server thread/INFO]: Saving players
[16:46:58] [Server thread/INFO]: Saving worlds
[16:46:58] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/Overworld
[16:46:58] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/Nether
[16:46:58] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/The End
[16:47:09] [Client thread/INFO]: Deleting level New World
[16:47:09] [Client thread/INFO]: Attempt 1...
[16:47:11] [Server thread/INFO]: Starting integrated minecraft server version 1.9-pre2
[16:47:11] [Server thread/INFO]: Generating keypair
[16:47:11] [Server thread/INFO]: Preparing start region for level 0
[16:47:12] [Server thread/INFO]: Preparing spawn area: 69%
[16:47:13] [Server thread/INFO]: Changing view distance to 13, from 10
[16:47:13] [Server thread/INFO]: ShadowWarriorTM[local:E:823c9c2b] logged in with entity id 550 at (-175.75716020217035, 64.0, 241.60472282831017)
[16:47:13] [Server thread/INFO]: ShadowWarriorTM joined the game
[16:47:14] [Server thread/INFO]: Saving and pausing game...
[16:47:14] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/Overworld
[16:47:14] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/Nether
[16:47:14] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/The End
[16:48:57] [Server thread/INFO]: Saving and pausing game...
[16:48:57] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/Overworld
[16:48:57] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/Nether
[16:48:57] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/The End
[16:48:59] [Client thread/INFO]: Using default channel type
[16:48:59] [Client thread/INFO]: Started on 38117
[16:48:59] [Client thread/INFO]: [CHAT] Local game hosted on port 38117
[16:49:04] [Client thread/INFO]: [CHAT] minecraft:cooked_chicken, minecraft:cooked_fish, minecraft:cookie, minecraft:cooked_mutton, minecraft:cooked_rabbit, minecraft:cooked_porkchop, minecraft:cooked_beef
[16:49:05] [Client thread/INFO]: [CHAT] minecraft:cooked_chicken, minecraft:cooked_fish, minecraft:cookie, minecraft:cooked_mutton, minecraft:cooked_rabbit, minecraft:cooked_porkchop, minecraft:cooked_beef
[16:49:05] [Client thread/INFO]: [CHAT] minecraft:cooked_chicken, minecraft:cooked_fish, minecraft:cookie, minecraft:cooked_mutton, minecraft:cooked_rabbit, minecraft:cooked_porkchop, minecraft:cooked_beef
[16:49:06] [Client thread/INFO]: [CHAT] minecraft:cooked_chicken, minecraft:cooked_fish, minecraft:cookie, minecraft:cooked_mutton, minecraft:cooked_rabbit, minecraft:cooked_porkchop, minecraft:cooked_beef
[16:49:07] [Client thread/INFO]: [CHAT] minecraft:cooked_chicken, minecraft:cooked_fish, minecraft:cookie, minecraft:cooked_mutton, minecraft:cooked_rabbit, minecraft:cooked_porkchop, minecraft:cooked_beef
[16:49:07] [Client thread/INFO]: [CHAT] minecraft:cooked_chicken, minecraft:cooked_fish, minecraft:cookie, minecraft:cooked_mutton, minecraft:cooked_rabbit, minecraft:cooked_porkchop, minecraft:cooked_beef
[16:49:08] [Client thread/INFO]: [CHAT] minecraft:cooked_chicken, minecraft:cooked_fish, minecraft:cookie, minecraft:cooked_mutton, minecraft:cooked_rabbit, minecraft:cooked_porkchop, minecraft:cooked_beef
[16:49:10] [Server thread/INFO]: [ShadowWarriorTM: Given [Steak] * 64 to ShadowWarriorTM]
[16:49:10] [Client thread/INFO]: [CHAT] Given [Steak] * 64 to ShadowWarriorTM
[16:52:05] [Server thread/INFO]: [ShadowWarriorTM: Given [Torch] * 64 to ShadowWarriorTM]
[16:52:05] [Client thread/INFO]: [CHAT] Given [Torch] * 64 to ShadowWarriorTM
[16:59:26] [Server thread/INFO]: [ShadowWarriorTM: Given [Iron Pickaxe] * 1 to ShadowWarriorTM]
[16:59:26] [Client thread/INFO]: [CHAT] Given [Iron Pickaxe] * 1 to ShadowWarriorTM
[17:04:27] [Server thread/INFO]: [ShadowWarriorTM: Given [Torch] * 64 to ShadowWarriorTM]
[17:04:27] [Client thread/INFO]: [CHAT] Given [Torch] * 64 to ShadowWarriorTM
[17:05:57] [Server thread/INFO]: ShadowWarriorTM was shot by Skeleton
[17:05:57] [Client thread/INFO]: [CHAT] ShadowWarriorTM was shot by Skeleton
[17:09:37] [Server thread/INFO]: ShadowWarriorTM lost connection: TextComponent{text='Disconnected', siblings=[], style=Style{hasParent=false, color=null, bold=null, italic=null, underlined=null, obfuscated=null, clickEvent=null, hoverEvent=null, insertion=null}}
[17:09:37] [Server thread/INFO]: ShadowWarriorTM left the game
[17:09:37] [Server thread/INFO]: Stopping singleplayer server as player logged out
[17:09:37] [Server thread/INFO]: Stopping server
[17:09:37] [Server thread/INFO]: Saving players
[17:09:37] [Server thread/INFO]: Saving worlds
[17:09:37] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/Overworld
[17:09:37] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/Nether
[17:09:37] [Server thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/The End
[17:12:42] [Client Shutdown Thread/INFO]: Stopping server
[17:12:42] [Client Shutdown Thread/INFO]: Saving players
[17:12:42] [Client Shutdown Thread/INFO]: Saving worlds
[17:12:42] [Client Shutdown Thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/Overworld
[17:12:42] [Client Shutdown Thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/Nether
[17:12:42] [Client Shutdown Thread/INFO]: Saving chunks for level 'Minecraft Snapshot Survival'/The End
AL lib: (EE) alc_cleanup: 1 device not closed
pure virtual method called
terminate called without an active exception

It seems that I become stuck in a loop and I am forced to kill minecraft. I can leave it sitting for hours and it'll either crash my computer or do nothing. The same exact error comes up commonly The world successfully saves but the game fails to get to the main menu.